Article · Wikipedia archive · Last revised Jul 12, 2026

Open Systems Adapter

The Open Systems Adapter (OSA) is a network controller for IBM z/Architecture, ES/9000 and S/390 mainframes. The OSA can be installed in a mainframe I/O cage. The OSA supports Ethernet, Token Ring and FDDI connectivity. The maximum data rate is 10 Gbps.

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The Open Systems Adapter (OSA) is a network controller for IBM z/Architecture, ES/9000 and S/390 mainframes. The OSA can be installed in a mainframe I/O cage. The OSA supports Ethernet, Token Ring and FDDI connectivity. The maximum data rate is 10 Gbps.123

References

References

  1. Local Area Network Concepts and Products: Adapters, Hubs and ATM (PDF) (First ed.). IBM Technical Support Organization. May 1996.
  2. Open Systems Adapter-Express - Customer's Guide and Reference (PDF). IBM. November 2000.
  3. "Networking on z/OS - Open Systems Adapter (OSA)". IBM.
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